1 /* Print values for GDB, the GNU debugger.
3 Copyright (C) 1986-2015 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "floatformat.h"
33 #include "extension.h"
35 #include "gdb_obstack.h"
39 /* Maximum number of wchars returned from wchar_iterate. */
42 /* A convenience macro to compute the size of a wchar_t buffer containing X
44 #define WCHAR_BUFLEN(X) ((X) * sizeof (gdb_wchar_t))
46 /* Character buffer size saved while iterating over wchars. */
47 #define WCHAR_BUFLEN_MAX WCHAR_BUFLEN (MAX_WCHARS)
49 /* A structure to encapsulate state information from iterated
50 character conversions. */
51 struct converted_character
53 /* The number of characters converted. */
56 /* The result of the conversion. See charset.h for more. */
57 enum wchar_iterate_result result;
59 /* The (saved) converted character(s). */
60 gdb_wchar_t chars[WCHAR_BUFLEN_MAX];
62 /* The first converted target byte. */
65 /* The number of bytes converted. */
68 /* How many times this character(s) is repeated. */
72 typedef struct converted_character converted_character_d;
73 DEF_VEC_O (converted_character_d);
75 /* Command lists for set/show print raw. */
76 struct cmd_list_element *setprintrawlist;
77 struct cmd_list_element *showprintrawlist;
79 /* Prototypes for local functions */
81 static int partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
82 int len, int *errptr);
84 static void show_print (char *, int);
86 static void set_print (char *, int);
88 static void set_radix (char *, int);
90 static void show_radix (char *, int);
92 static void set_input_radix (char *, int, struct cmd_list_element *);
94 static void set_input_radix_1 (int, unsigned);
96 static void set_output_radix (char *, int, struct cmd_list_element *);
98 static void set_output_radix_1 (int, unsigned);
100 void _initialize_valprint (void);
102 #define PRINT_MAX_DEFAULT 200 /* Start print_max off at this value. */
104 struct value_print_options user_print_options =
106 Val_prettyformat_default, /* prettyformat */
107 0, /* prettyformat_arrays */
108 0, /* prettyformat_structs */
111 1, /* addressprint */
113 PRINT_MAX_DEFAULT, /* print_max */
114 10, /* repeat_count_threshold */
115 0, /* output_format */
117 0, /* stop_print_at_null */
118 0, /* print_array_indexes */
120 1, /* static_field_print */
121 1, /* pascal_static_field_print */
127 /* Initialize *OPTS to be a copy of the user print options. */
129 get_user_print_options (struct value_print_options *opts)
131 *opts = user_print_options;
134 /* Initialize *OPTS to be a copy of the user print options, but with
135 pretty-formatting disabled. */
137 get_no_prettyformat_print_options (struct value_print_options *opts)
139 *opts = user_print_options;
140 opts->prettyformat = Val_no_prettyformat;
143 /* Initialize *OPTS to be a copy of the user print options, but using
144 FORMAT as the formatting option. */
146 get_formatted_print_options (struct value_print_options *opts,
149 *opts = user_print_options;
150 opts->format = format;
154 show_print_max (struct ui_file *file, int from_tty,
155 struct cmd_list_element *c, const char *value)
157 fprintf_filtered (file,
158 _("Limit on string chars or array "
159 "elements to print is %s.\n"),
164 /* Default input and output radixes, and output format letter. */
166 unsigned input_radix = 10;
168 show_input_radix (struct ui_file *file, int from_tty,
169 struct cmd_list_element *c, const char *value)
171 fprintf_filtered (file,
172 _("Default input radix for entering numbers is %s.\n"),
176 unsigned output_radix = 10;
178 show_output_radix (struct ui_file *file, int from_tty,
179 struct cmd_list_element *c, const char *value)
181 fprintf_filtered (file,
182 _("Default output radix for printing of values is %s.\n"),
186 /* By default we print arrays without printing the index of each element in
187 the array. This behavior can be changed by setting PRINT_ARRAY_INDEXES. */
190 show_print_array_indexes (struct ui_file *file, int from_tty,
191 struct cmd_list_element *c, const char *value)
193 fprintf_filtered (file, _("Printing of array indexes is %s.\n"), value);
196 /* Print repeat counts if there are more than this many repetitions of an
197 element in an array. Referenced by the low level language dependent
201 show_repeat_count_threshold (struct ui_file *file, int from_tty,
202 struct cmd_list_element *c, const char *value)
204 fprintf_filtered (file, _("Threshold for repeated print elements is %s.\n"),
208 /* If nonzero, stops printing of char arrays at first null. */
211 show_stop_print_at_null (struct ui_file *file, int from_tty,
212 struct cmd_list_element *c, const char *value)
214 fprintf_filtered (file,
215 _("Printing of char arrays to stop "
216 "at first null char is %s.\n"),
220 /* Controls pretty printing of structures. */
223 show_prettyformat_structs (struct ui_file *file, int from_tty,
224 struct cmd_list_element *c, const char *value)
226 fprintf_filtered (file, _("Pretty formatting of structures is %s.\n"), value);
229 /* Controls pretty printing of arrays. */
232 show_prettyformat_arrays (struct ui_file *file, int from_tty,
233 struct cmd_list_element *c, const char *value)
235 fprintf_filtered (file, _("Pretty formatting of arrays is %s.\n"), value);
238 /* If nonzero, causes unions inside structures or other unions to be
242 show_unionprint (struct ui_file *file, int from_tty,
243 struct cmd_list_element *c, const char *value)
245 fprintf_filtered (file,
246 _("Printing of unions interior to structures is %s.\n"),
250 /* If nonzero, causes machine addresses to be printed in certain contexts. */
253 show_addressprint (struct ui_file *file, int from_tty,
254 struct cmd_list_element *c, const char *value)
256 fprintf_filtered (file, _("Printing of addresses is %s.\n"), value);
260 show_symbol_print (struct ui_file *file, int from_tty,
261 struct cmd_list_element *c, const char *value)
263 fprintf_filtered (file,
264 _("Printing of symbols when printing pointers is %s.\n"),
270 /* A helper function for val_print. When printing in "summary" mode,
271 we want to print scalar arguments, but not aggregate arguments.
272 This function distinguishes between the two. */
275 val_print_scalar_type_p (struct type *type)
277 type = check_typedef (type);
278 while (TYPE_CODE (type) == TYPE_CODE_REF)
280 type = TYPE_TARGET_TYPE (type);
281 type = check_typedef (type);
283 switch (TYPE_CODE (type))
285 case TYPE_CODE_ARRAY:
286 case TYPE_CODE_STRUCT:
287 case TYPE_CODE_UNION:
289 case TYPE_CODE_STRING:
296 /* See its definition in value.h. */
299 valprint_check_validity (struct ui_file *stream,
302 const struct value *val)
304 type = check_typedef (type);
306 if (TYPE_CODE (type) != TYPE_CODE_UNION
307 && TYPE_CODE (type) != TYPE_CODE_STRUCT
308 && TYPE_CODE (type) != TYPE_CODE_ARRAY)
310 if (value_bits_any_optimized_out (val,
311 TARGET_CHAR_BIT * embedded_offset,
312 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
314 val_print_optimized_out (val, stream);
318 if (value_bits_synthetic_pointer (val, TARGET_CHAR_BIT * embedded_offset,
319 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
321 fputs_filtered (_("<synthetic pointer>"), stream);
325 if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
327 val_print_unavailable (stream);
336 val_print_optimized_out (const struct value *val, struct ui_file *stream)
338 if (val != NULL && value_lval_const (val) == lval_register)
339 val_print_not_saved (stream);
341 fprintf_filtered (stream, _("<optimized out>"));
345 val_print_not_saved (struct ui_file *stream)
347 fprintf_filtered (stream, _("<not saved>"));
351 val_print_unavailable (struct ui_file *stream)
353 fprintf_filtered (stream, _("<unavailable>"));
357 val_print_invalid_address (struct ui_file *stream)
359 fprintf_filtered (stream, _("<invalid address>"));
362 /* Print a pointer based on the type of its target.
364 Arguments to this functions are roughly the same as those in
365 generic_val_print. A difference is that ADDRESS is the address to print,
366 with embedded_offset already added. ELTTYPE represents
367 the pointed type after check_typedef. */
370 print_unpacked_pointer (struct type *type, struct type *elttype,
371 CORE_ADDR address, struct ui_file *stream,
372 const struct value_print_options *options)
374 struct gdbarch *gdbarch = get_type_arch (type);
376 if (TYPE_CODE (elttype) == TYPE_CODE_FUNC)
378 /* Try to print what function it points to. */
379 print_function_pointer_address (options, gdbarch, address, stream);
383 if (options->symbol_print)
384 print_address_demangle (options, gdbarch, address, stream, demangle);
385 else if (options->addressprint)
386 fputs_filtered (paddress (gdbarch, address), stream);
389 /* generic_val_print helper for TYPE_CODE_ARRAY. */
392 generic_val_print_array (struct type *type, const gdb_byte *valaddr,
393 int embedded_offset, CORE_ADDR address,
394 struct ui_file *stream, int recurse,
395 const struct value *original_value,
396 const struct value_print_options *options)
398 struct type *unresolved_elttype = TYPE_TARGET_TYPE (type);
399 struct type *elttype = check_typedef (unresolved_elttype);
401 if (TYPE_LENGTH (type) > 0 && TYPE_LENGTH (unresolved_elttype) > 0)
403 LONGEST low_bound, high_bound;
405 if (!get_array_bounds (type, &low_bound, &high_bound))
406 error (_("Could not determine the array high bound"));
408 if (options->prettyformat_arrays)
410 print_spaces_filtered (2 + 2 * recurse, stream);
413 fprintf_filtered (stream, "{");
414 val_print_array_elements (type, valaddr, embedded_offset,
416 recurse, original_value, options, 0);
417 fprintf_filtered (stream, "}");
421 /* Array of unspecified length: treat like pointer to first elt. */
422 print_unpacked_pointer (type, elttype, address + embedded_offset, stream,
428 /* generic_val_print helper for TYPE_CODE_PTR. */
431 generic_val_print_ptr (struct type *type, const gdb_byte *valaddr,
432 int embedded_offset, struct ui_file *stream,
433 const struct value *original_value,
434 const struct value_print_options *options)
436 if (options->format && options->format != 's')
438 val_print_scalar_formatted (type, valaddr, embedded_offset,
439 original_value, options, 0, stream);
443 struct type *unresolved_elttype = TYPE_TARGET_TYPE(type);
444 struct type *elttype = check_typedef (unresolved_elttype);
445 CORE_ADDR addr = unpack_pointer (type, valaddr + embedded_offset);
447 print_unpacked_pointer (type, elttype, addr, stream, options);
452 /* generic_val_print helper for TYPE_CODE_MEMBERPTR. */
455 generic_val_print_memberptr (struct type *type, const gdb_byte *valaddr,
456 int embedded_offset, struct ui_file *stream,
457 const struct value *original_value,
458 const struct value_print_options *options)
460 val_print_scalar_formatted (type, valaddr, embedded_offset,
461 original_value, options, 0, stream);
464 /* generic_val_print helper for TYPE_CODE_REF. */
467 generic_val_print_ref (struct type *type, const gdb_byte *valaddr,
468 int embedded_offset, struct ui_file *stream, int recurse,
469 const struct value *original_value,
470 const struct value_print_options *options)
472 struct gdbarch *gdbarch = get_type_arch (type);
473 struct type *elttype = check_typedef (TYPE_TARGET_TYPE (type));
475 if (options->addressprint)
478 = extract_typed_address (valaddr + embedded_offset, type);
480 fprintf_filtered (stream, "@");
481 fputs_filtered (paddress (gdbarch, addr), stream);
482 if (options->deref_ref)
483 fputs_filtered (": ", stream);
485 /* De-reference the reference. */
486 if (options->deref_ref)
488 if (TYPE_CODE (elttype) != TYPE_CODE_UNDEF)
490 struct value *deref_val;
492 deref_val = coerce_ref_if_computed (original_value);
493 if (deref_val != NULL)
495 /* More complicated computed references are not supported. */
496 gdb_assert (embedded_offset == 0);
499 deref_val = value_at (TYPE_TARGET_TYPE (type),
500 unpack_pointer (type,
502 + embedded_offset)));
504 common_val_print (deref_val, stream, recurse, options,
508 fputs_filtered ("???", stream);
512 /* generic_val_print helper for TYPE_CODE_ENUM. */
515 generic_val_print_enum (struct type *type, const gdb_byte *valaddr,
516 int embedded_offset, struct ui_file *stream,
517 const struct value *original_value,
518 const struct value_print_options *options)
526 val_print_scalar_formatted (type, valaddr, embedded_offset,
527 original_value, options, 0, stream);
530 len = TYPE_NFIELDS (type);
531 val = unpack_long (type, valaddr + embedded_offset);
532 for (i = 0; i < len; i++)
535 if (val == TYPE_FIELD_ENUMVAL (type, i))
542 fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
544 else if (TYPE_FLAG_ENUM (type))
548 /* We have a "flag" enum, so we try to decompose it into
549 pieces as appropriate. A flag enum has disjoint
550 constants by definition. */
551 fputs_filtered ("(", stream);
552 for (i = 0; i < len; ++i)
556 if ((val & TYPE_FIELD_ENUMVAL (type, i)) != 0)
559 fputs_filtered (" | ", stream);
562 val &= ~TYPE_FIELD_ENUMVAL (type, i);
563 fputs_filtered (TYPE_FIELD_NAME (type, i), stream);
567 if (first || val != 0)
570 fputs_filtered (" | ", stream);
571 fputs_filtered ("unknown: ", stream);
572 print_longest (stream, 'd', 0, val);
575 fputs_filtered (")", stream);
578 print_longest (stream, 'd', 0, val);
581 /* generic_val_print helper for TYPE_CODE_FLAGS. */
584 generic_val_print_flags (struct type *type, const gdb_byte *valaddr,
585 int embedded_offset, struct ui_file *stream,
586 const struct value *original_value,
587 const struct value_print_options *options)
591 val_print_scalar_formatted (type, valaddr, embedded_offset, original_value,
594 val_print_type_code_flags (type, valaddr + embedded_offset, stream);
597 /* generic_val_print helper for TYPE_CODE_FUNC and TYPE_CODE_METHOD. */
600 generic_val_print_func (struct type *type, const gdb_byte *valaddr,
601 int embedded_offset, CORE_ADDR address,
602 struct ui_file *stream,
603 const struct value *original_value,
604 const struct value_print_options *options)
606 struct gdbarch *gdbarch = get_type_arch (type);
610 val_print_scalar_formatted (type, valaddr, embedded_offset,
611 original_value, options, 0, stream);
615 /* FIXME, we should consider, at least for ANSI C language,
616 eliminating the distinction made between FUNCs and POINTERs
618 fprintf_filtered (stream, "{");
619 type_print (type, "", stream, -1);
620 fprintf_filtered (stream, "} ");
621 /* Try to print what function it points to, and its address. */
622 print_address_demangle (options, gdbarch, address, stream, demangle);
626 /* generic_val_print helper for TYPE_CODE_BOOL. */
629 generic_val_print_bool (struct type *type, const gdb_byte *valaddr,
630 int embedded_offset, struct ui_file *stream,
631 const struct value *original_value,
632 const struct value_print_options *options,
633 const struct generic_val_print_decorations *decorations)
637 if (options->format || options->output_format)
639 struct value_print_options opts = *options;
640 opts.format = (options->format ? options->format
641 : options->output_format);
642 val_print_scalar_formatted (type, valaddr, embedded_offset,
643 original_value, &opts, 0, stream);
647 val = unpack_long (type, valaddr + embedded_offset);
649 fputs_filtered (decorations->false_name, stream);
651 fputs_filtered (decorations->true_name, stream);
653 print_longest (stream, 'd', 0, val);
657 /* generic_val_print helper for TYPE_CODE_INT. */
660 generic_val_print_int (struct type *type, const gdb_byte *valaddr,
661 int embedded_offset, struct ui_file *stream,
662 const struct value *original_value,
663 const struct value_print_options *options)
665 if (options->format || options->output_format)
667 struct value_print_options opts = *options;
669 opts.format = (options->format ? options->format
670 : options->output_format);
671 val_print_scalar_formatted (type, valaddr, embedded_offset,
672 original_value, &opts, 0, stream);
675 val_print_type_code_int (type, valaddr + embedded_offset, stream);
678 /* generic_val_print helper for TYPE_CODE_CHAR. */
681 generic_val_print_char (struct type *type, struct type *unresolved_type,
682 const gdb_byte *valaddr, int embedded_offset,
683 struct ui_file *stream,
684 const struct value *original_value,
685 const struct value_print_options *options)
689 if (options->format || options->output_format)
691 struct value_print_options opts = *options;
693 opts.format = (options->format ? options->format
694 : options->output_format);
695 val_print_scalar_formatted (type, valaddr, embedded_offset,
696 original_value, &opts, 0, stream);
700 val = unpack_long (type, valaddr + embedded_offset);
701 if (TYPE_UNSIGNED (type))
702 fprintf_filtered (stream, "%u", (unsigned int) val);
704 fprintf_filtered (stream, "%d", (int) val);
705 fputs_filtered (" ", stream);
706 LA_PRINT_CHAR (val, unresolved_type, stream);
710 /* generic_val_print helper for TYPE_CODE_FLT. */
713 generic_val_print_float (struct type *type, const gdb_byte *valaddr,
714 int embedded_offset, struct ui_file *stream,
715 const struct value *original_value,
716 const struct value_print_options *options)
720 val_print_scalar_formatted (type, valaddr, embedded_offset,
721 original_value, options, 0, stream);
725 print_floating (valaddr + embedded_offset, type, stream);
729 /* generic_val_print helper for TYPE_CODE_DECFLOAT. */
732 generic_val_print_decfloat (struct type *type, const gdb_byte *valaddr,
733 int embedded_offset, struct ui_file *stream,
734 const struct value *original_value,
735 const struct value_print_options *options)
738 val_print_scalar_formatted (type, valaddr, embedded_offset, original_value,
741 print_decimal_floating (valaddr + embedded_offset, type, stream);
744 /* A generic val_print that is suitable for use by language
745 implementations of the la_val_print method. This function can
746 handle most type codes, though not all, notably exception
747 TYPE_CODE_UNION and TYPE_CODE_STRUCT, which must be implemented by
750 Most arguments are as to val_print.
752 The additional DECORATIONS argument can be used to customize the
753 output in some small, language-specific ways. */
756 generic_val_print (struct type *type, const gdb_byte *valaddr,
757 int embedded_offset, CORE_ADDR address,
758 struct ui_file *stream, int recurse,
759 const struct value *original_value,
760 const struct value_print_options *options,
761 const struct generic_val_print_decorations *decorations)
763 struct type *unresolved_type = type;
765 type = check_typedef (type);
766 switch (TYPE_CODE (type))
768 case TYPE_CODE_ARRAY:
769 generic_val_print_array (type, valaddr, embedded_offset, address, stream,
770 recurse, original_value, options);
773 case TYPE_CODE_MEMBERPTR:
774 generic_val_print_memberptr (type, valaddr, embedded_offset, stream,
775 original_value, options);
779 generic_val_print_ptr (type, valaddr, embedded_offset, stream,
780 original_value, options);
784 generic_val_print_ref (type, valaddr, embedded_offset, stream, recurse,
785 original_value, options);
789 generic_val_print_enum (type, valaddr, embedded_offset, stream,
790 original_value, options);
793 case TYPE_CODE_FLAGS:
794 generic_val_print_flags (type, valaddr, embedded_offset, stream,
795 original_value, options);
799 case TYPE_CODE_METHOD:
800 generic_val_print_func (type, valaddr, embedded_offset, address, stream,
801 original_value, options);
805 generic_val_print_bool (type, valaddr, embedded_offset, stream,
806 original_value, options, decorations);
809 case TYPE_CODE_RANGE:
810 /* FIXME: create_static_range_type does not set the unsigned bit in a
811 range type (I think it probably should copy it from the
812 target type), so we won't print values which are too large to
813 fit in a signed integer correctly. */
814 /* FIXME: Doesn't handle ranges of enums correctly. (Can't just
815 print with the target type, though, because the size of our
816 type and the target type might differ). */
821 generic_val_print_int (type, valaddr, embedded_offset, stream,
822 original_value, options);
826 generic_val_print_char (type, unresolved_type, valaddr, embedded_offset,
827 stream, original_value, options);
831 generic_val_print_float (type, valaddr, embedded_offset, stream,
832 original_value, options);
835 case TYPE_CODE_DECFLOAT:
836 generic_val_print_decfloat (type, valaddr, embedded_offset, stream,
837 original_value, options);
841 fputs_filtered (decorations->void_name, stream);
844 case TYPE_CODE_ERROR:
845 fprintf_filtered (stream, "%s", TYPE_ERROR_NAME (type));
848 case TYPE_CODE_UNDEF:
849 /* This happens (without TYPE_FLAG_STUB set) on systems which
850 don't use dbx xrefs (NO_DBX_XREFS in gcc) if a file has a
851 "struct foo *bar" and no complete type for struct foo in that
853 fprintf_filtered (stream, _("<incomplete type>"));
856 case TYPE_CODE_COMPLEX:
857 fprintf_filtered (stream, "%s", decorations->complex_prefix);
859 val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
860 valaddr, embedded_offset,
861 original_value, options, 0, stream);
863 print_floating (valaddr + embedded_offset,
864 TYPE_TARGET_TYPE (type),
866 fprintf_filtered (stream, "%s", decorations->complex_infix);
868 val_print_scalar_formatted (TYPE_TARGET_TYPE (type),
871 + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
875 print_floating (valaddr + embedded_offset
876 + TYPE_LENGTH (TYPE_TARGET_TYPE (type)),
877 TYPE_TARGET_TYPE (type),
879 fprintf_filtered (stream, "%s", decorations->complex_suffix);
882 case TYPE_CODE_UNION:
883 case TYPE_CODE_STRUCT:
884 case TYPE_CODE_METHODPTR:
886 error (_("Unhandled type code %d in symbol table."),
892 /* Print using the given LANGUAGE the data of type TYPE located at
893 VALADDR + EMBEDDED_OFFSET (within GDB), which came from the
894 inferior at address ADDRESS + EMBEDDED_OFFSET, onto stdio stream
895 STREAM according to OPTIONS. VAL is the whole object that came
896 from ADDRESS. VALADDR must point to the head of VAL's contents
899 The language printers will pass down an adjusted EMBEDDED_OFFSET to
900 further helper subroutines as subfields of TYPE are printed. In
901 such cases, VALADDR is passed down unadjusted, as well as VAL, so
902 that VAL can be queried for metadata about the contents data being
903 printed, using EMBEDDED_OFFSET as an offset into VAL's contents
904 buffer. For example: "has this field been optimized out", or "I'm
905 printing an object while inspecting a traceframe; has this
906 particular piece of data been collected?".
908 RECURSE indicates the amount of indentation to supply before
909 continuation lines; this amount is roughly twice the value of
913 val_print (struct type *type, const gdb_byte *valaddr, int embedded_offset,
914 CORE_ADDR address, struct ui_file *stream, int recurse,
915 const struct value *val,
916 const struct value_print_options *options,
917 const struct language_defn *language)
920 struct value_print_options local_opts = *options;
921 struct type *real_type = check_typedef (type);
923 if (local_opts.prettyformat == Val_prettyformat_default)
924 local_opts.prettyformat = (local_opts.prettyformat_structs
925 ? Val_prettyformat : Val_no_prettyformat);
929 /* Ensure that the type is complete and not just a stub. If the type is
930 only a stub and we can't find and substitute its complete type, then
931 print appropriate string and return. */
933 if (TYPE_STUB (real_type))
935 fprintf_filtered (stream, _("<incomplete type>"));
940 if (!valprint_check_validity (stream, real_type, embedded_offset, val))
945 ret = apply_ext_lang_val_pretty_printer (type, valaddr, embedded_offset,
946 address, stream, recurse,
947 val, options, language);
952 /* Handle summary mode. If the value is a scalar, print it;
953 otherwise, print an ellipsis. */
954 if (options->summary && !val_print_scalar_type_p (type))
956 fprintf_filtered (stream, "...");
962 language->la_val_print (type, valaddr, embedded_offset, address,
963 stream, recurse, val,
966 CATCH (except, RETURN_MASK_ERROR)
968 fprintf_filtered (stream, _("<error reading variable>"));
973 /* Check whether the value VAL is printable. Return 1 if it is;
974 return 0 and print an appropriate error message to STREAM according to
975 OPTIONS if it is not. */
978 value_check_printable (struct value *val, struct ui_file *stream,
979 const struct value_print_options *options)
983 fprintf_filtered (stream, _("<address of value unknown>"));
987 if (value_entirely_optimized_out (val))
989 if (options->summary && !val_print_scalar_type_p (value_type (val)))
990 fprintf_filtered (stream, "...");
992 val_print_optimized_out (val, stream);
996 if (value_entirely_unavailable (val))
998 if (options->summary && !val_print_scalar_type_p (value_type (val)))
999 fprintf_filtered (stream, "...");
1001 val_print_unavailable (stream);
1005 if (TYPE_CODE (value_type (val)) == TYPE_CODE_INTERNAL_FUNCTION)
1007 fprintf_filtered (stream, _("<internal function %s>"),
1008 value_internal_function_name (val));
1015 /* Print using the given LANGUAGE the value VAL onto stream STREAM according
1018 This is a preferable interface to val_print, above, because it uses
1019 GDB's value mechanism. */
1022 common_val_print (struct value *val, struct ui_file *stream, int recurse,
1023 const struct value_print_options *options,
1024 const struct language_defn *language)
1026 if (!value_check_printable (val, stream, options))
1029 if (language->la_language == language_ada)
1030 /* The value might have a dynamic type, which would cause trouble
1031 below when trying to extract the value contents (since the value
1032 size is determined from the type size which is unknown). So
1033 get a fixed representation of our value. */
1034 val = ada_to_fixed_value (val);
1036 val_print (value_type (val), value_contents_for_printing (val),
1037 value_embedded_offset (val), value_address (val),
1039 val, options, language);
1042 /* Print on stream STREAM the value VAL according to OPTIONS. The value
1043 is printed using the current_language syntax. */
1046 value_print (struct value *val, struct ui_file *stream,
1047 const struct value_print_options *options)
1049 if (!value_check_printable (val, stream, options))
1055 = apply_ext_lang_val_pretty_printer (value_type (val),
1056 value_contents_for_printing (val),
1057 value_embedded_offset (val),
1058 value_address (val),
1060 val, options, current_language);
1066 LA_VALUE_PRINT (val, stream, options);
1069 /* Called by various <lang>_val_print routines to print
1070 TYPE_CODE_INT's. TYPE is the type. VALADDR is the address of the
1071 value. STREAM is where to print the value. */
1074 val_print_type_code_int (struct type *type, const gdb_byte *valaddr,
1075 struct ui_file *stream)
1077 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
1079 if (TYPE_LENGTH (type) > sizeof (LONGEST))
1083 if (TYPE_UNSIGNED (type)
1084 && extract_long_unsigned_integer (valaddr, TYPE_LENGTH (type),
1087 print_longest (stream, 'u', 0, val);
1091 /* Signed, or we couldn't turn an unsigned value into a
1092 LONGEST. For signed values, one could assume two's
1093 complement (a reasonable assumption, I think) and do
1094 better than this. */
1095 print_hex_chars (stream, (unsigned char *) valaddr,
1096 TYPE_LENGTH (type), byte_order);
1101 print_longest (stream, TYPE_UNSIGNED (type) ? 'u' : 'd', 0,
1102 unpack_long (type, valaddr));
1107 val_print_type_code_flags (struct type *type, const gdb_byte *valaddr,
1108 struct ui_file *stream)
1110 ULONGEST val = unpack_long (type, valaddr);
1111 int bitpos, nfields = TYPE_NFIELDS (type);
1113 fputs_filtered ("[ ", stream);
1114 for (bitpos = 0; bitpos < nfields; bitpos++)
1116 if (TYPE_FIELD_BITPOS (type, bitpos) != -1
1117 && (val & ((ULONGEST)1 << bitpos)))
1119 if (TYPE_FIELD_NAME (type, bitpos))
1120 fprintf_filtered (stream, "%s ", TYPE_FIELD_NAME (type, bitpos));
1122 fprintf_filtered (stream, "#%d ", bitpos);
1125 fputs_filtered ("]", stream);
1128 /* Print a scalar of data of type TYPE, pointed to in GDB by VALADDR,
1129 according to OPTIONS and SIZE on STREAM. Format i is not supported
1132 This is how the elements of an array or structure are printed
1136 val_print_scalar_formatted (struct type *type,
1137 const gdb_byte *valaddr, int embedded_offset,
1138 const struct value *val,
1139 const struct value_print_options *options,
1141 struct ui_file *stream)
1143 gdb_assert (val != NULL);
1144 gdb_assert (valaddr == value_contents_for_printing_const (val));
1146 /* If we get here with a string format, try again without it. Go
1147 all the way back to the language printers, which may call us
1149 if (options->format == 's')
1151 struct value_print_options opts = *options;
1154 val_print (type, valaddr, embedded_offset, 0, stream, 0, val, &opts,
1159 /* A scalar object that does not have all bits available can't be
1160 printed, because all bits contribute to its representation. */
1161 if (value_bits_any_optimized_out (val,
1162 TARGET_CHAR_BIT * embedded_offset,
1163 TARGET_CHAR_BIT * TYPE_LENGTH (type)))
1164 val_print_optimized_out (val, stream);
1165 else if (!value_bytes_available (val, embedded_offset, TYPE_LENGTH (type)))
1166 val_print_unavailable (stream);
1168 print_scalar_formatted (valaddr + embedded_offset, type,
1169 options, size, stream);
1172 /* Print a number according to FORMAT which is one of d,u,x,o,b,h,w,g.
1173 The raison d'etre of this function is to consolidate printing of
1174 LONG_LONG's into this one function. The format chars b,h,w,g are
1175 from print_scalar_formatted(). Numbers are printed using C
1178 USE_C_FORMAT means to use C format in all cases. Without it,
1179 'o' and 'x' format do not include the standard C radix prefix
1182 Hilfinger/2004-09-09: USE_C_FORMAT was originally called USE_LOCAL
1183 and was intended to request formating according to the current
1184 language and would be used for most integers that GDB prints. The
1185 exceptional cases were things like protocols where the format of
1186 the integer is a protocol thing, not a user-visible thing). The
1187 parameter remains to preserve the information of what things might
1188 be printed with language-specific format, should we ever resurrect
1192 print_longest (struct ui_file *stream, int format, int use_c_format,
1200 val = int_string (val_long, 10, 1, 0, 1); break;
1202 val = int_string (val_long, 10, 0, 0, 1); break;
1204 val = int_string (val_long, 16, 0, 0, use_c_format); break;
1206 val = int_string (val_long, 16, 0, 2, 1); break;
1208 val = int_string (val_long, 16, 0, 4, 1); break;
1210 val = int_string (val_long, 16, 0, 8, 1); break;
1212 val = int_string (val_long, 16, 0, 16, 1); break;
1215 val = int_string (val_long, 8, 0, 0, use_c_format); break;
1217 internal_error (__FILE__, __LINE__,
1218 _("failed internal consistency check"));
1220 fputs_filtered (val, stream);
1223 /* This used to be a macro, but I don't think it is called often enough
1224 to merit such treatment. */
1225 /* Convert a LONGEST to an int. This is used in contexts (e.g. number of
1226 arguments to a function, number in a value history, register number, etc.)
1227 where the value must not be larger than can fit in an int. */
1230 longest_to_int (LONGEST arg)
1232 /* Let the compiler do the work. */
1233 int rtnval = (int) arg;
1235 /* Check for overflows or underflows. */
1236 if (sizeof (LONGEST) > sizeof (int))
1240 error (_("Value out of range."));
1246 /* Print a floating point value of type TYPE (not always a
1247 TYPE_CODE_FLT), pointed to in GDB by VALADDR, on STREAM. */
1250 print_floating (const gdb_byte *valaddr, struct type *type,
1251 struct ui_file *stream)
1255 const struct floatformat *fmt = NULL;
1256 unsigned len = TYPE_LENGTH (type);
1257 enum float_kind kind;
1259 /* If it is a floating-point, check for obvious problems. */
1260 if (TYPE_CODE (type) == TYPE_CODE_FLT)
1261 fmt = floatformat_from_type (type);
1264 kind = floatformat_classify (fmt, valaddr);
1265 if (kind == float_nan)
1267 if (floatformat_is_negative (fmt, valaddr))
1268 fprintf_filtered (stream, "-");
1269 fprintf_filtered (stream, "nan(");
1270 fputs_filtered ("0x", stream);
1271 fputs_filtered (floatformat_mantissa (fmt, valaddr), stream);
1272 fprintf_filtered (stream, ")");
1275 else if (kind == float_infinite)
1277 if (floatformat_is_negative (fmt, valaddr))
1278 fputs_filtered ("-", stream);
1279 fputs_filtered ("inf", stream);
1284 /* NOTE: cagney/2002-01-15: The TYPE passed into print_floating()
1285 isn't necessarily a TYPE_CODE_FLT. Consequently, unpack_double
1286 needs to be used as that takes care of any necessary type
1287 conversions. Such conversions are of course direct to DOUBLEST
1288 and disregard any possible target floating point limitations.
1289 For instance, a u64 would be converted and displayed exactly on a
1290 host with 80 bit DOUBLEST but with loss of information on a host
1291 with 64 bit DOUBLEST. */
1293 doub = unpack_double (type, valaddr, &inv);
1296 fprintf_filtered (stream, "<invalid float value>");
1300 /* FIXME: kettenis/2001-01-20: The following code makes too much
1301 assumptions about the host and target floating point format. */
1303 /* NOTE: cagney/2002-02-03: Since the TYPE of what was passed in may
1304 not necessarily be a TYPE_CODE_FLT, the below ignores that and
1305 instead uses the type's length to determine the precision of the
1306 floating-point value being printed. */
1308 if (len < sizeof (double))
1309 fprintf_filtered (stream, "%.9g", (double) doub);
1310 else if (len == sizeof (double))
1311 fprintf_filtered (stream, "%.17g", (double) doub);
1313 #ifdef PRINTF_HAS_LONG_DOUBLE
1314 fprintf_filtered (stream, "%.35Lg", doub);
1316 /* This at least wins with values that are representable as
1318 fprintf_filtered (stream, "%.17g", (double) doub);
1323 print_decimal_floating (const gdb_byte *valaddr, struct type *type,
1324 struct ui_file *stream)
1326 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
1327 char decstr[MAX_DECIMAL_STRING];
1328 unsigned len = TYPE_LENGTH (type);
1330 decimal_to_string (valaddr, len, byte_order, decstr);
1331 fputs_filtered (decstr, stream);
1336 print_binary_chars (struct ui_file *stream, const gdb_byte *valaddr,
1337 unsigned len, enum bfd_endian byte_order)
1340 #define BITS_IN_BYTES 8
1346 /* Declared "int" so it will be signed.
1347 This ensures that right shift will shift in zeros. */
1349 const int mask = 0x080;
1351 /* FIXME: We should be not printing leading zeroes in most cases. */
1353 if (byte_order == BFD_ENDIAN_BIG)
1359 /* Every byte has 8 binary characters; peel off
1360 and print from the MSB end. */
1362 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
1364 if (*p & (mask >> i))
1369 fprintf_filtered (stream, "%1d", b);
1375 for (p = valaddr + len - 1;
1379 for (i = 0; i < (BITS_IN_BYTES * sizeof (*p)); i++)
1381 if (*p & (mask >> i))
1386 fprintf_filtered (stream, "%1d", b);
1392 /* VALADDR points to an integer of LEN bytes.
1393 Print it in octal on stream or format it in buf. */
1396 print_octal_chars (struct ui_file *stream, const gdb_byte *valaddr,
1397 unsigned len, enum bfd_endian byte_order)
1400 unsigned char octa1, octa2, octa3, carry;
1403 /* FIXME: We should be not printing leading zeroes in most cases. */
1406 /* Octal is 3 bits, which doesn't fit. Yuk. So we have to track
1407 * the extra bits, which cycle every three bytes:
1409 * Byte side: 0 1 2 3
1411 * bit number 123 456 78 | 9 012 345 6 | 78 901 234 | 567 890 12 |
1413 * Octal side: 0 1 carry 3 4 carry ...
1415 * Cycle number: 0 1 2
1417 * But of course we are printing from the high side, so we have to
1418 * figure out where in the cycle we are so that we end up with no
1419 * left over bits at the end.
1421 #define BITS_IN_OCTAL 3
1422 #define HIGH_ZERO 0340
1423 #define LOW_ZERO 0016
1424 #define CARRY_ZERO 0003
1425 #define HIGH_ONE 0200
1426 #define MID_ONE 0160
1427 #define LOW_ONE 0016
1428 #define CARRY_ONE 0001
1429 #define HIGH_TWO 0300
1430 #define MID_TWO 0070
1431 #define LOW_TWO 0007
1433 /* For 32 we start in cycle 2, with two bits and one bit carry;
1434 for 64 in cycle in cycle 1, with one bit and a two bit carry. */
1436 cycle = (len * BITS_IN_BYTES) % BITS_IN_OCTAL;
1439 fputs_filtered ("0", stream);
1440 if (byte_order == BFD_ENDIAN_BIG)
1449 /* No carry in, carry out two bits. */
1451 octa1 = (HIGH_ZERO & *p) >> 5;
1452 octa2 = (LOW_ZERO & *p) >> 2;
1453 carry = (CARRY_ZERO & *p);
1454 fprintf_filtered (stream, "%o", octa1);
1455 fprintf_filtered (stream, "%o", octa2);
1459 /* Carry in two bits, carry out one bit. */
1461 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
1462 octa2 = (MID_ONE & *p) >> 4;
1463 octa3 = (LOW_ONE & *p) >> 1;
1464 carry = (CARRY_ONE & *p);
1465 fprintf_filtered (stream, "%o", octa1);
1466 fprintf_filtered (stream, "%o", octa2);
1467 fprintf_filtered (stream, "%o", octa3);
1471 /* Carry in one bit, no carry out. */
1473 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
1474 octa2 = (MID_TWO & *p) >> 3;
1475 octa3 = (LOW_TWO & *p);
1477 fprintf_filtered (stream, "%o", octa1);
1478 fprintf_filtered (stream, "%o", octa2);
1479 fprintf_filtered (stream, "%o", octa3);
1483 error (_("Internal error in octal conversion;"));
1487 cycle = cycle % BITS_IN_OCTAL;
1492 for (p = valaddr + len - 1;
1499 /* Carry out, no carry in */
1501 octa1 = (HIGH_ZERO & *p) >> 5;
1502 octa2 = (LOW_ZERO & *p) >> 2;
1503 carry = (CARRY_ZERO & *p);
1504 fprintf_filtered (stream, "%o", octa1);
1505 fprintf_filtered (stream, "%o", octa2);
1509 /* Carry in, carry out */
1511 octa1 = (carry << 1) | ((HIGH_ONE & *p) >> 7);
1512 octa2 = (MID_ONE & *p) >> 4;
1513 octa3 = (LOW_ONE & *p) >> 1;
1514 carry = (CARRY_ONE & *p);
1515 fprintf_filtered (stream, "%o", octa1);
1516 fprintf_filtered (stream, "%o", octa2);
1517 fprintf_filtered (stream, "%o", octa3);
1521 /* Carry in, no carry out */
1523 octa1 = (carry << 2) | ((HIGH_TWO & *p) >> 6);
1524 octa2 = (MID_TWO & *p) >> 3;
1525 octa3 = (LOW_TWO & *p);
1527 fprintf_filtered (stream, "%o", octa1);
1528 fprintf_filtered (stream, "%o", octa2);
1529 fprintf_filtered (stream, "%o", octa3);
1533 error (_("Internal error in octal conversion;"));
1537 cycle = cycle % BITS_IN_OCTAL;
1543 /* VALADDR points to an integer of LEN bytes.
1544 Print it in decimal on stream or format it in buf. */
1547 print_decimal_chars (struct ui_file *stream, const gdb_byte *valaddr,
1548 unsigned len, enum bfd_endian byte_order)
1551 #define CARRY_OUT( x ) ((x) / TEN) /* extend char to int */
1552 #define CARRY_LEFT( x ) ((x) % TEN)
1553 #define SHIFT( x ) ((x) << 4)
1554 #define LOW_NIBBLE( x ) ( (x) & 0x00F)
1555 #define HIGH_NIBBLE( x ) (((x) & 0x0F0) >> 4)
1558 unsigned char *digits;
1561 int i, j, decimal_digits;
1565 /* Base-ten number is less than twice as many digits
1566 as the base 16 number, which is 2 digits per byte. */
1568 decimal_len = len * 2 * 2;
1569 digits = xmalloc (decimal_len);
1571 for (i = 0; i < decimal_len; i++)
1576 /* Ok, we have an unknown number of bytes of data to be printed in
1579 * Given a hex number (in nibbles) as XYZ, we start by taking X and
1580 * decemalizing it as "x1 x2" in two decimal nibbles. Then we multiply
1581 * the nibbles by 16, add Y and re-decimalize. Repeat with Z.
1583 * The trick is that "digits" holds a base-10 number, but sometimes
1584 * the individual digits are > 10.
1586 * Outer loop is per nibble (hex digit) of input, from MSD end to
1589 decimal_digits = 0; /* Number of decimal digits so far */
1590 p = (byte_order == BFD_ENDIAN_BIG) ? valaddr : valaddr + len - 1;
1592 while ((byte_order == BFD_ENDIAN_BIG) ? (p < valaddr + len) : (p >= valaddr))
1595 * Multiply current base-ten number by 16 in place.
1596 * Each digit was between 0 and 9, now is between
1599 for (j = 0; j < decimal_digits; j++)
1601 digits[j] = SHIFT (digits[j]);
1604 /* Take the next nibble off the input and add it to what
1605 * we've got in the LSB position. Bottom 'digit' is now
1606 * between 0 and 159.
1608 * "flip" is used to run this loop twice for each byte.
1612 /* Take top nibble. */
1614 digits[0] += HIGH_NIBBLE (*p);
1619 /* Take low nibble and bump our pointer "p". */
1621 digits[0] += LOW_NIBBLE (*p);
1622 if (byte_order == BFD_ENDIAN_BIG)
1629 /* Re-decimalize. We have to do this often enough
1630 * that we don't overflow, but once per nibble is
1631 * overkill. Easier this way, though. Note that the
1632 * carry is often larger than 10 (e.g. max initial
1633 * carry out of lowest nibble is 15, could bubble all
1634 * the way up greater than 10). So we have to do
1635 * the carrying beyond the last current digit.
1638 for (j = 0; j < decimal_len - 1; j++)
1642 /* "/" won't handle an unsigned char with
1643 * a value that if signed would be negative.
1644 * So extend to longword int via "dummy".
1647 carry = CARRY_OUT (dummy);
1648 digits[j] = CARRY_LEFT (dummy);
1650 if (j >= decimal_digits && carry == 0)
1653 * All higher digits are 0 and we
1654 * no longer have a carry.
1656 * Note: "j" is 0-based, "decimal_digits" is
1659 decimal_digits = j + 1;
1665 /* Ok, now "digits" is the decimal representation, with
1666 the "decimal_digits" actual digits. Print! */
1668 for (i = decimal_digits - 1; i >= 0; i--)
1670 fprintf_filtered (stream, "%1d", digits[i]);
1675 /* VALADDR points to an integer of LEN bytes. Print it in hex on stream. */
1678 print_hex_chars (struct ui_file *stream, const gdb_byte *valaddr,
1679 unsigned len, enum bfd_endian byte_order)
1683 /* FIXME: We should be not printing leading zeroes in most cases. */
1685 fputs_filtered ("0x", stream);
1686 if (byte_order == BFD_ENDIAN_BIG)
1692 fprintf_filtered (stream, "%02x", *p);
1697 for (p = valaddr + len - 1;
1701 fprintf_filtered (stream, "%02x", *p);
1706 /* VALADDR points to a char integer of LEN bytes.
1707 Print it out in appropriate language form on stream.
1708 Omit any leading zero chars. */
1711 print_char_chars (struct ui_file *stream, struct type *type,
1712 const gdb_byte *valaddr,
1713 unsigned len, enum bfd_endian byte_order)
1717 if (byte_order == BFD_ENDIAN_BIG)
1720 while (p < valaddr + len - 1 && *p == 0)
1723 while (p < valaddr + len)
1725 LA_EMIT_CHAR (*p, type, stream, '\'');
1731 p = valaddr + len - 1;
1732 while (p > valaddr && *p == 0)
1735 while (p >= valaddr)
1737 LA_EMIT_CHAR (*p, type, stream, '\'');
1743 /* Print function pointer with inferior address ADDRESS onto stdio
1747 print_function_pointer_address (const struct value_print_options *options,
1748 struct gdbarch *gdbarch,
1750 struct ui_file *stream)
1753 = gdbarch_convert_from_func_ptr_addr (gdbarch, address,
1756 /* If the function pointer is represented by a description, print
1757 the address of the description. */
1758 if (options->addressprint && func_addr != address)
1760 fputs_filtered ("@", stream);
1761 fputs_filtered (paddress (gdbarch, address), stream);
1762 fputs_filtered (": ", stream);
1764 print_address_demangle (options, gdbarch, func_addr, stream, demangle);
1768 /* Print on STREAM using the given OPTIONS the index for the element
1769 at INDEX of an array whose index type is INDEX_TYPE. */
1772 maybe_print_array_index (struct type *index_type, LONGEST index,
1773 struct ui_file *stream,
1774 const struct value_print_options *options)
1776 struct value *index_value;
1778 if (!options->print_array_indexes)
1781 index_value = value_from_longest (index_type, index);
1783 LA_PRINT_ARRAY_INDEX (index_value, stream, options);
1786 /* Called by various <lang>_val_print routines to print elements of an
1787 array in the form "<elem1>, <elem2>, <elem3>, ...".
1789 (FIXME?) Assumes array element separator is a comma, which is correct
1790 for all languages currently handled.
1791 (FIXME?) Some languages have a notation for repeated array elements,
1792 perhaps we should try to use that notation when appropriate. */
1795 val_print_array_elements (struct type *type,
1796 const gdb_byte *valaddr, int embedded_offset,
1797 CORE_ADDR address, struct ui_file *stream,
1799 const struct value *val,
1800 const struct value_print_options *options,
1803 unsigned int things_printed = 0;
1805 struct type *elttype, *index_type, *base_index_type;
1807 /* Position of the array element we are examining to see
1808 whether it is repeated. */
1810 /* Number of repetitions we have detected so far. */
1812 LONGEST low_bound, high_bound;
1813 LONGEST low_pos, high_pos;
1815 elttype = TYPE_TARGET_TYPE (type);
1816 eltlen = TYPE_LENGTH (check_typedef (elttype));
1817 index_type = TYPE_INDEX_TYPE (type);
1819 if (get_array_bounds (type, &low_bound, &high_bound))
1821 if (TYPE_CODE (index_type) == TYPE_CODE_RANGE)
1822 base_index_type = TYPE_TARGET_TYPE (index_type);
1824 base_index_type = index_type;
1826 /* Non-contiguous enumerations types can by used as index types
1827 in some languages (e.g. Ada). In this case, the array length
1828 shall be computed from the positions of the first and last
1829 literal in the enumeration type, and not from the values
1830 of these literals. */
1831 if (!discrete_position (base_index_type, low_bound, &low_pos)
1832 || !discrete_position (base_index_type, high_bound, &high_pos))
1834 warning (_("unable to get positions in array, use bounds instead"));
1835 low_pos = low_bound;
1836 high_pos = high_bound;
1839 /* The array length should normally be HIGH_POS - LOW_POS + 1.
1840 But we have to be a little extra careful, because some languages
1841 such as Ada allow LOW_POS to be greater than HIGH_POS for
1842 empty arrays. In that situation, the array length is just zero,
1844 if (low_pos > high_pos)
1847 len = high_pos - low_pos + 1;
1851 warning (_("unable to get bounds of array, assuming null array"));
1856 annotate_array_section_begin (i, elttype);
1858 for (; i < len && things_printed < options->print_max; i++)
1862 if (options->prettyformat_arrays)
1864 fprintf_filtered (stream, ",\n");
1865 print_spaces_filtered (2 + 2 * recurse, stream);
1869 fprintf_filtered (stream, ", ");
1872 wrap_here (n_spaces (2 + 2 * recurse));
1873 maybe_print_array_index (index_type, i + low_bound,
1878 /* Only check for reps if repeat_count_threshold is not set to
1879 UINT_MAX (unlimited). */
1880 if (options->repeat_count_threshold < UINT_MAX)
1883 && value_contents_eq (val,
1884 embedded_offset + i * eltlen,
1895 if (reps > options->repeat_count_threshold)
1897 val_print (elttype, valaddr, embedded_offset + i * eltlen,
1898 address, stream, recurse + 1, val, options,
1900 annotate_elt_rep (reps);
1901 fprintf_filtered (stream, " <repeats %u times>", reps);
1902 annotate_elt_rep_end ();
1905 things_printed += options->repeat_count_threshold;
1909 val_print (elttype, valaddr, embedded_offset + i * eltlen,
1911 stream, recurse + 1, val, options, current_language);
1916 annotate_array_section_end ();
1919 fprintf_filtered (stream, "...");
1923 /* Read LEN bytes of target memory at address MEMADDR, placing the
1924 results in GDB's memory at MYADDR. Returns a count of the bytes
1925 actually read, and optionally a target_xfer_status value in the
1926 location pointed to by ERRPTR if ERRPTR is non-null. */
1928 /* FIXME: cagney/1999-10-14: Only used by val_print_string. Can this
1929 function be eliminated. */
1932 partial_memory_read (CORE_ADDR memaddr, gdb_byte *myaddr,
1933 int len, int *errptr)
1935 int nread; /* Number of bytes actually read. */
1936 int errcode; /* Error from last read. */
1938 /* First try a complete read. */
1939 errcode = target_read_memory (memaddr, myaddr, len);
1947 /* Loop, reading one byte at a time until we get as much as we can. */
1948 for (errcode = 0, nread = 0; len > 0 && errcode == 0; nread++, len--)
1950 errcode = target_read_memory (memaddr++, myaddr++, 1);
1952 /* If an error, the last read was unsuccessful, so adjust count. */
1965 /* Read a string from the inferior, at ADDR, with LEN characters of WIDTH bytes
1966 each. Fetch at most FETCHLIMIT characters. BUFFER will be set to a newly
1967 allocated buffer containing the string, which the caller is responsible to
1968 free, and BYTES_READ will be set to the number of bytes read. Returns 0 on
1969 success, or a target_xfer_status on failure.
1971 If LEN > 0, reads the lesser of LEN or FETCHLIMIT characters
1972 (including eventual NULs in the middle or end of the string).
1974 If LEN is -1, stops at the first null character (not necessarily
1975 the first null byte) up to a maximum of FETCHLIMIT characters. Set
1976 FETCHLIMIT to UINT_MAX to read as many characters as possible from
1979 Unless an exception is thrown, BUFFER will always be allocated, even on
1980 failure. In this case, some characters might have been read before the
1981 failure happened. Check BYTES_READ to recognize this situation.
1983 Note: There was a FIXME asking to make this code use target_read_string,
1984 but this function is more general (can read past null characters, up to
1985 given LEN). Besides, it is used much more often than target_read_string
1986 so it is more tested. Perhaps callers of target_read_string should use
1987 this function instead? */
1990 read_string (CORE_ADDR addr, int len, int width, unsigned int fetchlimit,
1991 enum bfd_endian byte_order, gdb_byte **buffer, int *bytes_read)
1993 int errcode; /* Errno returned from bad reads. */
1994 unsigned int nfetch; /* Chars to fetch / chars fetched. */
1995 gdb_byte *bufptr; /* Pointer to next available byte in
1997 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
1999 /* Loop until we either have all the characters, or we encounter
2000 some error, such as bumping into the end of the address space. */
2004 old_chain = make_cleanup (free_current_contents, buffer);
2008 /* We want fetchlimit chars, so we might as well read them all in
2010 unsigned int fetchlen = min (len, fetchlimit);
2012 *buffer = (gdb_byte *) xmalloc (fetchlen * width);
2015 nfetch = partial_memory_read (addr, bufptr, fetchlen * width, &errcode)
2017 addr += nfetch * width;
2018 bufptr += nfetch * width;
2022 unsigned long bufsize = 0;
2023 unsigned int chunksize; /* Size of each fetch, in chars. */
2024 int found_nul; /* Non-zero if we found the nul char. */
2025 gdb_byte *limit; /* First location past end of fetch buffer. */
2028 /* We are looking for a NUL terminator to end the fetching, so we
2029 might as well read in blocks that are large enough to be efficient,
2030 but not so large as to be slow if fetchlimit happens to be large.
2031 So we choose the minimum of 8 and fetchlimit. We used to use 200
2032 instead of 8 but 200 is way too big for remote debugging over a
2034 chunksize = min (8, fetchlimit);
2039 nfetch = min (chunksize, fetchlimit - bufsize);
2041 if (*buffer == NULL)
2042 *buffer = (gdb_byte *) xmalloc (nfetch * width);
2044 *buffer = (gdb_byte *) xrealloc (*buffer,
2045 (nfetch + bufsize) * width);
2047 bufptr = *buffer + bufsize * width;
2050 /* Read as much as we can. */
2051 nfetch = partial_memory_read (addr, bufptr, nfetch * width, &errcode)
2054 /* Scan this chunk for the null character that terminates the string
2055 to print. If found, we don't need to fetch any more. Note
2056 that bufptr is explicitly left pointing at the next character
2057 after the null character, or at the next character after the end
2060 limit = bufptr + nfetch * width;
2061 while (bufptr < limit)
2065 c = extract_unsigned_integer (bufptr, width, byte_order);
2070 /* We don't care about any error which happened after
2071 the NUL terminator. */
2078 while (errcode == 0 /* no error */
2079 && bufptr - *buffer < fetchlimit * width /* no overrun */
2080 && !found_nul); /* haven't found NUL yet */
2083 { /* Length of string is really 0! */
2084 /* We always allocate *buffer. */
2085 *buffer = bufptr = xmalloc (1);
2089 /* bufptr and addr now point immediately beyond the last byte which we
2090 consider part of the string (including a '\0' which ends the string). */
2091 *bytes_read = bufptr - *buffer;
2095 discard_cleanups (old_chain);
2100 /* Return true if print_wchar can display W without resorting to a
2101 numeric escape, false otherwise. */
2104 wchar_printable (gdb_wchar_t w)
2106 return (gdb_iswprint (w)
2107 || w == LCST ('\a') || w == LCST ('\b')
2108 || w == LCST ('\f') || w == LCST ('\n')
2109 || w == LCST ('\r') || w == LCST ('\t')
2110 || w == LCST ('\v'));
2113 /* A helper function that converts the contents of STRING to wide
2114 characters and then appends them to OUTPUT. */
2117 append_string_as_wide (const char *string,
2118 struct obstack *output)
2120 for (; *string; ++string)
2122 gdb_wchar_t w = gdb_btowc (*string);
2123 obstack_grow (output, &w, sizeof (gdb_wchar_t));
2127 /* Print a wide character W to OUTPUT. ORIG is a pointer to the
2128 original (target) bytes representing the character, ORIG_LEN is the
2129 number of valid bytes. WIDTH is the number of bytes in a base
2130 characters of the type. OUTPUT is an obstack to which wide
2131 characters are emitted. QUOTER is a (narrow) character indicating
2132 the style of quotes surrounding the character to be printed.
2133 NEED_ESCAPE is an in/out flag which is used to track numeric
2134 escapes across calls. */
2137 print_wchar (gdb_wint_t w, const gdb_byte *orig,
2138 int orig_len, int width,
2139 enum bfd_endian byte_order,
2140 struct obstack *output,
2141 int quoter, int *need_escapep)
2143 int need_escape = *need_escapep;
2147 /* iswprint implementation on Windows returns 1 for tab character.
2148 In order to avoid different printout on this host, we explicitly
2149 use wchar_printable function. */
2153 obstack_grow_wstr (output, LCST ("\\a"));
2156 obstack_grow_wstr (output, LCST ("\\b"));
2159 obstack_grow_wstr (output, LCST ("\\f"));
2162 obstack_grow_wstr (output, LCST ("\\n"));
2165 obstack_grow_wstr (output, LCST ("\\r"));
2168 obstack_grow_wstr (output, LCST ("\\t"));
2171 obstack_grow_wstr (output, LCST ("\\v"));
2175 if (wchar_printable (w) && (!need_escape || (!gdb_iswdigit (w)
2177 && w != LCST ('9'))))
2179 gdb_wchar_t wchar = w;
2181 if (w == gdb_btowc (quoter) || w == LCST ('\\'))
2182 obstack_grow_wstr (output, LCST ("\\"));
2183 obstack_grow (output, &wchar, sizeof (gdb_wchar_t));
2189 for (i = 0; i + width <= orig_len; i += width)
2194 value = extract_unsigned_integer (&orig[i], width,
2196 /* If the value fits in 3 octal digits, print it that
2197 way. Otherwise, print it as a hex escape. */
2199 xsnprintf (octal, sizeof (octal), "\\%.3o",
2200 (int) (value & 0777));
2202 xsnprintf (octal, sizeof (octal), "\\x%lx", (long) value);
2203 append_string_as_wide (octal, output);
2205 /* If we somehow have extra bytes, print them now. */
2206 while (i < orig_len)
2210 xsnprintf (octal, sizeof (octal), "\\%.3o", orig[i] & 0xff);
2211 append_string_as_wide (octal, output);
2222 /* Print the character C on STREAM as part of the contents of a
2223 literal string whose delimiter is QUOTER. ENCODING names the
2227 generic_emit_char (int c, struct type *type, struct ui_file *stream,
2228 int quoter, const char *encoding)
2230 enum bfd_endian byte_order
2231 = gdbarch_byte_order (get_type_arch (type));
2232 struct obstack wchar_buf, output;
2233 struct cleanup *cleanups;
2235 struct wchar_iterator *iter;
2236 int need_escape = 0;
2238 buf = alloca (TYPE_LENGTH (type));
2239 pack_long (buf, type, c);
2241 iter = make_wchar_iterator (buf, TYPE_LENGTH (type),
2242 encoding, TYPE_LENGTH (type));
2243 cleanups = make_cleanup_wchar_iterator (iter);
2245 /* This holds the printable form of the wchar_t data. */
2246 obstack_init (&wchar_buf);
2247 make_cleanup_obstack_free (&wchar_buf);
2253 const gdb_byte *buf;
2255 int print_escape = 1;
2256 enum wchar_iterate_result result;
2258 num_chars = wchar_iterate (iter, &result, &chars, &buf, &buflen);
2263 /* If all characters are printable, print them. Otherwise,
2264 we're going to have to print an escape sequence. We
2265 check all characters because we want to print the target
2266 bytes in the escape sequence, and we don't know character
2267 boundaries there. */
2271 for (i = 0; i < num_chars; ++i)
2272 if (!wchar_printable (chars[i]))
2280 for (i = 0; i < num_chars; ++i)
2281 print_wchar (chars[i], buf, buflen,
2282 TYPE_LENGTH (type), byte_order,
2283 &wchar_buf, quoter, &need_escape);
2287 /* This handles the NUM_CHARS == 0 case as well. */
2289 print_wchar (gdb_WEOF, buf, buflen, TYPE_LENGTH (type),
2290 byte_order, &wchar_buf, quoter, &need_escape);
2293 /* The output in the host encoding. */
2294 obstack_init (&output);
2295 make_cleanup_obstack_free (&output);
2297 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
2298 (gdb_byte *) obstack_base (&wchar_buf),
2299 obstack_object_size (&wchar_buf),
2300 sizeof (gdb_wchar_t), &output, translit_char);
2301 obstack_1grow (&output, '\0');
2303 fputs_filtered (obstack_base (&output), stream);
2305 do_cleanups (cleanups);
2308 /* Return the repeat count of the next character/byte in ITER,
2309 storing the result in VEC. */
2312 count_next_character (struct wchar_iterator *iter,
2313 VEC (converted_character_d) **vec)
2315 struct converted_character *current;
2317 if (VEC_empty (converted_character_d, *vec))
2319 struct converted_character tmp;
2323 = wchar_iterate (iter, &tmp.result, &chars, &tmp.buf, &tmp.buflen);
2324 if (tmp.num_chars > 0)
2326 gdb_assert (tmp.num_chars < MAX_WCHARS);
2327 memcpy (tmp.chars, chars, tmp.num_chars * sizeof (gdb_wchar_t));
2329 VEC_safe_push (converted_character_d, *vec, &tmp);
2332 current = VEC_last (converted_character_d, *vec);
2334 /* Count repeated characters or bytes. */
2335 current->repeat_count = 1;
2336 if (current->num_chars == -1)
2344 struct converted_character d;
2351 /* Get the next character. */
2353 = wchar_iterate (iter, &d.result, &chars, &d.buf, &d.buflen);
2355 /* If a character was successfully converted, save the character
2356 into the converted character. */
2357 if (d.num_chars > 0)
2359 gdb_assert (d.num_chars < MAX_WCHARS);
2360 memcpy (d.chars, chars, WCHAR_BUFLEN (d.num_chars));
2363 /* Determine if the current character is the same as this
2365 if (d.num_chars == current->num_chars && d.result == current->result)
2367 /* There are two cases to consider:
2369 1) Equality of converted character (num_chars > 0)
2370 2) Equality of non-converted character (num_chars == 0) */
2371 if ((current->num_chars > 0
2372 && memcmp (current->chars, d.chars,
2373 WCHAR_BUFLEN (current->num_chars)) == 0)
2374 || (current->num_chars == 0
2375 && current->buflen == d.buflen
2376 && memcmp (current->buf, d.buf, current->buflen) == 0))
2377 ++current->repeat_count;
2385 /* Push this next converted character onto the result vector. */
2386 repeat = current->repeat_count;
2387 VEC_safe_push (converted_character_d, *vec, &d);
2392 /* Print the characters in CHARS to the OBSTACK. QUOTE_CHAR is the quote
2393 character to use with string output. WIDTH is the size of the output
2394 character type. BYTE_ORDER is the the target byte order. OPTIONS
2395 is the user's print options. */
2398 print_converted_chars_to_obstack (struct obstack *obstack,
2399 VEC (converted_character_d) *chars,
2400 int quote_char, int width,
2401 enum bfd_endian byte_order,
2402 const struct value_print_options *options)
2405 struct converted_character *elem;
2406 enum {START, SINGLE, REPEAT, INCOMPLETE, FINISH} state, last;
2407 gdb_wchar_t wide_quote_char = gdb_btowc (quote_char);
2408 int need_escape = 0;
2410 /* Set the start state. */
2412 last = state = START;
2420 /* Nothing to do. */
2427 /* We are outputting a single character
2428 (< options->repeat_count_threshold). */
2432 /* We were outputting some other type of content, so we
2433 must output and a comma and a quote. */
2435 obstack_grow_wstr (obstack, LCST (", "));
2436 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2438 /* Output the character. */
2439 for (j = 0; j < elem->repeat_count; ++j)
2441 if (elem->result == wchar_iterate_ok)
2442 print_wchar (elem->chars[0], elem->buf, elem->buflen, width,
2443 byte_order, obstack, quote_char, &need_escape);
2445 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width,
2446 byte_order, obstack, quote_char, &need_escape);
2456 /* We are outputting a character with a repeat count
2457 greater than options->repeat_count_threshold. */
2461 /* We were outputting a single string. Terminate the
2463 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2466 obstack_grow_wstr (obstack, LCST (", "));
2468 /* Output the character and repeat string. */
2469 obstack_grow_wstr (obstack, LCST ("'"));
2470 if (elem->result == wchar_iterate_ok)
2471 print_wchar (elem->chars[0], elem->buf, elem->buflen, width,
2472 byte_order, obstack, quote_char, &need_escape);
2474 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width,
2475 byte_order, obstack, quote_char, &need_escape);
2476 obstack_grow_wstr (obstack, LCST ("'"));
2477 s = xstrprintf (_(" <repeats %u times>"), elem->repeat_count);
2478 for (j = 0; s[j]; ++j)
2480 gdb_wchar_t w = gdb_btowc (s[j]);
2481 obstack_grow (obstack, &w, sizeof (gdb_wchar_t));
2488 /* We are outputting an incomplete sequence. */
2491 /* If we were outputting a string of SINGLE characters,
2492 terminate the quote. */
2493 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2496 obstack_grow_wstr (obstack, LCST (", "));
2498 /* Output the incomplete sequence string. */
2499 obstack_grow_wstr (obstack, LCST ("<incomplete sequence "));
2500 print_wchar (gdb_WEOF, elem->buf, elem->buflen, width, byte_order,
2501 obstack, 0, &need_escape);
2502 obstack_grow_wstr (obstack, LCST (">"));
2504 /* We do not attempt to outupt anything after this. */
2509 /* All done. If we were outputting a string of SINGLE
2510 characters, the string must be terminated. Otherwise,
2511 REPEAT and INCOMPLETE are always left properly terminated. */
2513 obstack_grow (obstack, &wide_quote_char, sizeof (gdb_wchar_t));
2518 /* Get the next element and state. */
2520 if (state != FINISH)
2522 elem = VEC_index (converted_character_d, chars, idx++);
2523 switch (elem->result)
2525 case wchar_iterate_ok:
2526 case wchar_iterate_invalid:
2527 if (elem->repeat_count > options->repeat_count_threshold)
2533 case wchar_iterate_incomplete:
2537 case wchar_iterate_eof:
2545 /* Print the character string STRING, printing at most LENGTH
2546 characters. LENGTH is -1 if the string is nul terminated. TYPE is
2547 the type of each character. OPTIONS holds the printing options;
2548 printing stops early if the number hits print_max; repeat counts
2549 are printed as appropriate. Print ellipses at the end if we had to
2550 stop before printing LENGTH characters, or if FORCE_ELLIPSES.
2551 QUOTE_CHAR is the character to print at each end of the string. If
2552 C_STYLE_TERMINATOR is true, and the last character is 0, then it is
2556 generic_printstr (struct ui_file *stream, struct type *type,
2557 const gdb_byte *string, unsigned int length,
2558 const char *encoding, int force_ellipses,
2559 int quote_char, int c_style_terminator,
2560 const struct value_print_options *options)
2562 enum bfd_endian byte_order = gdbarch_byte_order (get_type_arch (type));
2564 int width = TYPE_LENGTH (type);
2565 struct obstack wchar_buf, output;
2566 struct cleanup *cleanup;
2567 struct wchar_iterator *iter;
2569 struct converted_character *last;
2570 VEC (converted_character_d) *converted_chars;
2574 unsigned long current_char = 1;
2576 for (i = 0; current_char; ++i)
2579 current_char = extract_unsigned_integer (string + i * width,
2585 /* If the string was not truncated due to `set print elements', and
2586 the last byte of it is a null, we don't print that, in
2587 traditional C style. */
2588 if (c_style_terminator
2591 && (extract_unsigned_integer (string + (length - 1) * width,
2592 width, byte_order) == 0))
2597 fputs_filtered ("\"\"", stream);
2601 /* Arrange to iterate over the characters, in wchar_t form. */
2602 iter = make_wchar_iterator (string, length * width, encoding, width);
2603 cleanup = make_cleanup_wchar_iterator (iter);
2604 converted_chars = NULL;
2605 make_cleanup (VEC_cleanup (converted_character_d), &converted_chars);
2607 /* Convert characters until the string is over or the maximum
2608 number of printed characters has been reached. */
2610 while (i < options->print_max)
2616 /* Grab the next character and repeat count. */
2617 r = count_next_character (iter, &converted_chars);
2619 /* If less than zero, the end of the input string was reached. */
2623 /* Otherwise, add the count to the total print count and get
2624 the next character. */
2628 /* Get the last element and determine if the entire string was
2630 last = VEC_last (converted_character_d, converted_chars);
2631 finished = (last->result == wchar_iterate_eof);
2633 /* Ensure that CONVERTED_CHARS is terminated. */
2634 last->result = wchar_iterate_eof;
2636 /* WCHAR_BUF is the obstack we use to represent the string in
2638 obstack_init (&wchar_buf);
2639 make_cleanup_obstack_free (&wchar_buf);
2641 /* Print the output string to the obstack. */
2642 print_converted_chars_to_obstack (&wchar_buf, converted_chars, quote_char,
2643 width, byte_order, options);
2645 if (force_ellipses || !finished)
2646 obstack_grow_wstr (&wchar_buf, LCST ("..."));
2648 /* OUTPUT is where we collect `char's for printing. */
2649 obstack_init (&output);
2650 make_cleanup_obstack_free (&output);
2652 convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
2653 (gdb_byte *) obstack_base (&wchar_buf),
2654 obstack_object_size (&wchar_buf),
2655 sizeof (gdb_wchar_t), &output, translit_char);
2656 obstack_1grow (&output, '\0');
2658 fputs_filtered (obstack_base (&output), stream);
2660 do_cleanups (cleanup);
2663 /* Print a string from the inferior, starting at ADDR and printing up to LEN
2664 characters, of WIDTH bytes a piece, to STREAM. If LEN is -1, printing
2665 stops at the first null byte, otherwise printing proceeds (including null
2666 bytes) until either print_max or LEN characters have been printed,
2667 whichever is smaller. ENCODING is the name of the string's
2668 encoding. It can be NULL, in which case the target encoding is
2672 val_print_string (struct type *elttype, const char *encoding,
2673 CORE_ADDR addr, int len,
2674 struct ui_file *stream,
2675 const struct value_print_options *options)
2677 int force_ellipsis = 0; /* Force ellipsis to be printed if nonzero. */
2678 int errcode; /* Errno returned from bad reads. */
2679 int found_nul; /* Non-zero if we found the nul char. */
2680 unsigned int fetchlimit; /* Maximum number of chars to print. */
2682 gdb_byte *buffer = NULL; /* Dynamically growable fetch buffer. */
2683 struct cleanup *old_chain = NULL; /* Top of the old cleanup chain. */
2684 struct gdbarch *gdbarch = get_type_arch (elttype);
2685 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
2686 int width = TYPE_LENGTH (elttype);
2688 /* First we need to figure out the limit on the number of characters we are
2689 going to attempt to fetch and print. This is actually pretty simple. If
2690 LEN >= zero, then the limit is the minimum of LEN and print_max. If
2691 LEN is -1, then the limit is print_max. This is true regardless of
2692 whether print_max is zero, UINT_MAX (unlimited), or something in between,
2693 because finding the null byte (or available memory) is what actually
2694 limits the fetch. */
2696 fetchlimit = (len == -1 ? options->print_max : min (len,
2697 options->print_max));
2699 errcode = read_string (addr, len, width, fetchlimit, byte_order,
2700 &buffer, &bytes_read);
2701 old_chain = make_cleanup (xfree, buffer);
2705 /* We now have either successfully filled the buffer to fetchlimit,
2706 or terminated early due to an error or finding a null char when
2709 /* Determine found_nul by looking at the last character read. */
2711 if (bytes_read >= width)
2712 found_nul = extract_unsigned_integer (buffer + bytes_read - width, width,
2714 if (len == -1 && !found_nul)
2718 /* We didn't find a NUL terminator we were looking for. Attempt
2719 to peek at the next character. If not successful, or it is not
2720 a null byte, then force ellipsis to be printed. */
2722 peekbuf = (gdb_byte *) alloca (width);
2724 if (target_read_memory (addr, peekbuf, width) == 0
2725 && extract_unsigned_integer (peekbuf, width, byte_order) != 0)
2728 else if ((len >= 0 && errcode != 0) || (len > bytes_read / width))
2730 /* Getting an error when we have a requested length, or fetching less
2731 than the number of characters actually requested, always make us
2736 /* If we get an error before fetching anything, don't print a string.
2737 But if we fetch something and then get an error, print the string
2738 and then the error message. */
2739 if (errcode == 0 || bytes_read > 0)
2741 LA_PRINT_STRING (stream, elttype, buffer, bytes_read / width,
2742 encoding, force_ellipsis, options);
2749 str = memory_error_message (errcode, gdbarch, addr);
2750 make_cleanup (xfree, str);
2752 fprintf_filtered (stream, "<error: ");
2753 fputs_filtered (str, stream);
2754 fprintf_filtered (stream, ">");
2758 do_cleanups (old_chain);
2760 return (bytes_read / width);
2764 /* The 'set input-radix' command writes to this auxiliary variable.
2765 If the requested radix is valid, INPUT_RADIX is updated; otherwise,
2766 it is left unchanged. */
2768 static unsigned input_radix_1 = 10;
2770 /* Validate an input or output radix setting, and make sure the user
2771 knows what they really did here. Radix setting is confusing, e.g.
2772 setting the input radix to "10" never changes it! */
2775 set_input_radix (char *args, int from_tty, struct cmd_list_element *c)
2777 set_input_radix_1 (from_tty, input_radix_1);
2781 set_input_radix_1 (int from_tty, unsigned radix)
2783 /* We don't currently disallow any input radix except 0 or 1, which don't
2784 make any mathematical sense. In theory, we can deal with any input
2785 radix greater than 1, even if we don't have unique digits for every
2786 value from 0 to radix-1, but in practice we lose on large radix values.
2787 We should either fix the lossage or restrict the radix range more.
2792 input_radix_1 = input_radix;
2793 error (_("Nonsense input radix ``decimal %u''; input radix unchanged."),
2796 input_radix_1 = input_radix = radix;
2799 printf_filtered (_("Input radix now set to "
2800 "decimal %u, hex %x, octal %o.\n"),
2801 radix, radix, radix);
2805 /* The 'set output-radix' command writes to this auxiliary variable.
2806 If the requested radix is valid, OUTPUT_RADIX is updated,
2807 otherwise, it is left unchanged. */
2809 static unsigned output_radix_1 = 10;
2812 set_output_radix (char *args, int from_tty, struct cmd_list_element *c)
2814 set_output_radix_1 (from_tty, output_radix_1);
2818 set_output_radix_1 (int from_tty, unsigned radix)
2820 /* Validate the radix and disallow ones that we aren't prepared to
2821 handle correctly, leaving the radix unchanged. */
2825 user_print_options.output_format = 'x'; /* hex */
2828 user_print_options.output_format = 0; /* decimal */
2831 user_print_options.output_format = 'o'; /* octal */
2834 output_radix_1 = output_radix;
2835 error (_("Unsupported output radix ``decimal %u''; "
2836 "output radix unchanged."),
2839 output_radix_1 = output_radix = radix;
2842 printf_filtered (_("Output radix now set to "
2843 "decimal %u, hex %x, octal %o.\n"),
2844 radix, radix, radix);
2848 /* Set both the input and output radix at once. Try to set the output radix
2849 first, since it has the most restrictive range. An radix that is valid as
2850 an output radix is also valid as an input radix.
2852 It may be useful to have an unusual input radix. If the user wishes to
2853 set an input radix that is not valid as an output radix, he needs to use
2854 the 'set input-radix' command. */
2857 set_radix (char *arg, int from_tty)
2861 radix = (arg == NULL) ? 10 : parse_and_eval_long (arg);
2862 set_output_radix_1 (0, radix);
2863 set_input_radix_1 (0, radix);
2866 printf_filtered (_("Input and output radices now set to "
2867 "decimal %u, hex %x, octal %o.\n"),
2868 radix, radix, radix);
2872 /* Show both the input and output radices. */
2875 show_radix (char *arg, int from_tty)
2879 if (input_radix == output_radix)
2881 printf_filtered (_("Input and output radices set to "
2882 "decimal %u, hex %x, octal %o.\n"),
2883 input_radix, input_radix, input_radix);
2887 printf_filtered (_("Input radix set to decimal "
2888 "%u, hex %x, octal %o.\n"),
2889 input_radix, input_radix, input_radix);
2890 printf_filtered (_("Output radix set to decimal "
2891 "%u, hex %x, octal %o.\n"),
2892 output_radix, output_radix, output_radix);
2899 set_print (char *arg, int from_tty)
2902 "\"set print\" must be followed by the name of a print subcommand.\n");
2903 help_list (setprintlist, "set print ", all_commands, gdb_stdout);
2907 show_print (char *args, int from_tty)
2909 cmd_show_list (showprintlist, from_tty, "");
2913 set_print_raw (char *arg, int from_tty)
2916 "\"set print raw\" must be followed by the name of a \"print raw\" subcommand.\n");
2917 help_list (setprintrawlist, "set print raw ", all_commands, gdb_stdout);
2921 show_print_raw (char *args, int from_tty)
2923 cmd_show_list (showprintrawlist, from_tty, "");
2928 _initialize_valprint (void)
2930 add_prefix_cmd ("print", no_class, set_print,
2931 _("Generic command for setting how things print."),
2932 &setprintlist, "set print ", 0, &setlist);
2933 add_alias_cmd ("p", "print", no_class, 1, &setlist);
2934 /* Prefer set print to set prompt. */
2935 add_alias_cmd ("pr", "print", no_class, 1, &setlist);
2937 add_prefix_cmd ("print", no_class, show_print,
2938 _("Generic command for showing print settings."),
2939 &showprintlist, "show print ", 0, &showlist);
2940 add_alias_cmd ("p", "print", no_class, 1, &showlist);
2941 add_alias_cmd ("pr", "print", no_class, 1, &showlist);
2943 add_prefix_cmd ("raw", no_class, set_print_raw,
2945 Generic command for setting what things to print in \"raw\" mode."),
2946 &setprintrawlist, "set print raw ", 0, &setprintlist);
2947 add_prefix_cmd ("raw", no_class, show_print_raw,
2948 _("Generic command for showing \"print raw\" settings."),
2949 &showprintrawlist, "show print raw ", 0, &showprintlist);
2951 add_setshow_uinteger_cmd ("elements", no_class,
2952 &user_print_options.print_max, _("\
2953 Set limit on string chars or array elements to print."), _("\
2954 Show limit on string chars or array elements to print."), _("\
2955 \"set print elements unlimited\" causes there to be no limit."),
2958 &setprintlist, &showprintlist);
2960 add_setshow_boolean_cmd ("null-stop", no_class,
2961 &user_print_options.stop_print_at_null, _("\
2962 Set printing of char arrays to stop at first null char."), _("\
2963 Show printing of char arrays to stop at first null char."), NULL,
2965 show_stop_print_at_null,
2966 &setprintlist, &showprintlist);
2968 add_setshow_uinteger_cmd ("repeats", no_class,
2969 &user_print_options.repeat_count_threshold, _("\
2970 Set threshold for repeated print elements."), _("\
2971 Show threshold for repeated print elements."), _("\
2972 \"set print repeats unlimited\" causes all elements to be individually printed."),
2974 show_repeat_count_threshold,
2975 &setprintlist, &showprintlist);
2977 add_setshow_boolean_cmd ("pretty", class_support,
2978 &user_print_options.prettyformat_structs, _("\
2979 Set pretty formatting of structures."), _("\
2980 Show pretty formatting of structures."), NULL,
2982 show_prettyformat_structs,
2983 &setprintlist, &showprintlist);
2985 add_setshow_boolean_cmd ("union", class_support,
2986 &user_print_options.unionprint, _("\
2987 Set printing of unions interior to structures."), _("\
2988 Show printing of unions interior to structures."), NULL,
2991 &setprintlist, &showprintlist);
2993 add_setshow_boolean_cmd ("array", class_support,
2994 &user_print_options.prettyformat_arrays, _("\
2995 Set pretty formatting of arrays."), _("\
2996 Show pretty formatting of arrays."), NULL,
2998 show_prettyformat_arrays,
2999 &setprintlist, &showprintlist);
3001 add_setshow_boolean_cmd ("address", class_support,
3002 &user_print_options.addressprint, _("\
3003 Set printing of addresses."), _("\
3004 Show printing of addresses."), NULL,
3007 &setprintlist, &showprintlist);
3009 add_setshow_boolean_cmd ("symbol", class_support,
3010 &user_print_options.symbol_print, _("\
3011 Set printing of symbol names when printing pointers."), _("\
3012 Show printing of symbol names when printing pointers."),
3015 &setprintlist, &showprintlist);
3017 add_setshow_zuinteger_cmd ("input-radix", class_support, &input_radix_1,
3019 Set default input radix for entering numbers."), _("\
3020 Show default input radix for entering numbers."), NULL,
3023 &setlist, &showlist);
3025 add_setshow_zuinteger_cmd ("output-radix", class_support, &output_radix_1,
3027 Set default output radix for printing of values."), _("\
3028 Show default output radix for printing of values."), NULL,
3031 &setlist, &showlist);
3033 /* The "set radix" and "show radix" commands are special in that
3034 they are like normal set and show commands but allow two normally
3035 independent variables to be either set or shown with a single
3036 command. So the usual deprecated_add_set_cmd() and [deleted]
3037 add_show_from_set() commands aren't really appropriate. */
3038 /* FIXME: i18n: With the new add_setshow_integer command, that is no
3039 longer true - show can display anything. */
3040 add_cmd ("radix", class_support, set_radix, _("\
3041 Set default input and output number radices.\n\
3042 Use 'set input-radix' or 'set output-radix' to independently set each.\n\
3043 Without an argument, sets both radices back to the default value of 10."),
3045 add_cmd ("radix", class_support, show_radix, _("\
3046 Show the default input and output number radices.\n\
3047 Use 'show input-radix' or 'show output-radix' to independently show each."),
3050 add_setshow_boolean_cmd ("array-indexes", class_support,
3051 &user_print_options.print_array_indexes, _("\
3052 Set printing of array indexes."), _("\
3053 Show printing of array indexes"), NULL, NULL, show_print_array_indexes,
3054 &setprintlist, &showprintlist);